22 
July, 1929 
The Queensland Naturalist 
A general report on the excursion to the Darra 
Cement Works and Clay pits (fossiliferous) was given by 
Dr. E. 0. Marks. A report 011 the fossils found on the 
excursion was forwarded by Dr. F. W. Whitehouse (see 
P. 30). 
EVENING MEETING, 20th MAY, 1929.— The Presi- 
dent (Dr. F. W. Whitehouse) occupied the chair. Dr 
E. 0. Marks gave a brief report on the excursion to Candle 
Mountain, and spoke more especially on the physiograph- 
ical and geological features of the surrounding country 
(see p. 27). A lecturette on the “Microscopic Structure 
of Wood” was delivered by Mr. W. 1). Francis. The 
lecturer who has paid a good deal of attention to the 
anatomy of Queensland woods illustrated his remarks by 
lantern slides of photomicrographs of Hoop and Dunya 
Pines (Araucaria spp.), Kauri Pine (Agathis robusta), 
Australian White Beech (Gmelina Leiclihardtii), Thready- 
barked Oak (Casuarina inophloia) and several other tim- 
bers. 
EVENING MEETING, 17th JUNE, 1929.— The Presi- 
dent (Dr. F. W. Whitehouse) occupied the chair. Mrs. 
Aubrey Thomson was elected an ordinary member of the 
Club. Reports on the excursion to Clear Mountain were 
given by Mr. G. 11. Barker (birds) and Mr. C. T. White 
(botany). Mr. F. A. Perkins, B.Sc. (Lecturer in Economic 
Entomology, Queensland University), delivered a lec- 
turette on “Fruit Flies.” The lecturer mentioned that 
about sixty species of Fruit Flies (Trypetidae) had been 
named from Australia, and a number more certainly re- 
mained to be described. Several species ai*e of economic 
importance in Australia, viz., the common Mediterranean 
Fruit Ely (Ceratitis capita ta), the Queensland Fruit Fly 
(Chaetodacus Tryoni), the Jarvis Fruit Ely (Ohaetodacus 
Jarvisi), the Banana Fruit Fly (Chaetodacus musae), and 
the Cureurbit Fruit Fly (Dacus cucumis). The spotted 
or Island Fruit Ely (Rioxa musae), commonly known as 
the Boatman, occurs in a number of native and cultivated 
fruits, but is not a primary pest, as it does not breed in 
sound fruit, but mostly in fruit already attacked by other 
flies or already injured in some other way. The lecturer 
then went on to speak of the life history of Fruit Flies 
and methods of control. The most efficient control method 
was the regular picking up and destroying of “stung” 
fruit. This combined with the use of lure and traps went 
a long way towards success in combating' the, ravages of 
the fly. 
